Expert hair-colorist Rita Hazan, who has worked with A-list clients including Jennifer Lopez, Michelle Williams, and Renee Zellweger, knows better than anyone that visible roots can ruin an otherwise great coloring job. So she created the Root Concealer as an easy-to-use solution. The spray-on formula comes in four shades—Dark Brown/Black, Light Brown, Blonde, and Red—which match a wide range of hair. All you need is one quick spray over your roots, and you're covered. The color is temporary (it lasts until you wash it out), but it's resistant to water and perspiration, so it won't run on a hot day or cause stains.

We can't thank Ms. Hazan enough for this convenient and quick fix.

Rita Hazan in action.

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